We don't support editing <div>s right now (as they're BranchNodes) nor
<span>s (as they're annotations), but most of those are inside templates
and so not editable in VE anyway.
Bug: T157989
Change-Id: I647b2a544fd16952696d0de8d07cb72189b27ecb
The dialog already supports cancelling by pressing Escape,
but the usual dedicated button was missing.
Change-Id: Ic63b5b59940a43474051466bdbbba0dbeb4342a9